Rainwater harvesting is an ecological and economical solution for reducing drinking water consumption. Installing a system that uses reclaimed water to flush toilets can result in significant savings, while limiting environmental impact. Here are the steps and best practices for setting up such a system.
Why use rainwater for toilets?
Toilets account for around 20% of a household’s water consumption. Since there’s no need to use drinking water for flushing, rainwater is an ideal alternative.
Advantages of water recovery for toilets :
- Save drinking water: reduce your water bill.
- Ecological solution: reduced use of water resources.
- Reduced limescale: less maintenance of sanitary installations.
- Possibility of supplying other equipment: watering, outdoor cleaning, etc.
How does a water recovery system for toilets work?
The principle is simple: rainwater is collected via the roof, filtered, stored in a tank and conveyed to the toilet via an independent circuit. An emergency system switches over to drinking water in the event of an empty tank.
The main components of the system are :
- A storage tank: underground or above ground, concrete or plastic.
- A filtration system: to eliminate impurities before use.
- A pump: to convey water to the sanitary facilities.
- A double network: separating drinking water and rainwater in compliance with standards.
Install a water recovery system for toilets
Choosing a tank location
An in-ground tank is more discreet and protects the water from temperature variations, but requires earthworks. An above-ground tank is easier to install, but must be protected from frost and heat.
Connecting the roof to the tank
Water is collected via gutters and directed to a leaf and sediment filter to prevent impurities from accumulating in the tank.
Installing the supply circuit
The filtered water is pumped to the toilet via a separate circuit from the drinking water. It is essential to install a non-return valve and comply with regulations prohibiting any contact between rainwater and drinking water.
Set up a back-up system
In the event of a shortage of rainwater, an automatic switchover to drinking water ensures that the toilet functions properly. This system must comply with plumbing standards to avoid contamination of the public network.
System maintenance
Regular maintenance is essential to ensure optimum performance and avoid unpleasant odors or clogged filters:
- Clean filter every 3 to 6 months.
- Empty and rinse the tank once a year to prevent sediment build-up.
- Check pump and connections for proper operation.
Call on Leader Services
The installation of a water recovery system for toilets must comply with plumbing and sanitary standards. Leader Services can help you find an effective solution that’s right for your home.
- Discover our plumbing services: Leader Services – Plumbing
- Need a professional? Contact us here: Leader Services – Contact
Conclusion
Using rainwater for the toilet is a simple and effective way of reducing drinking water consumption. A well-designed system, with appropriate filtration and regular maintenance, guarantees safe, long-lasting use. For an optimized, standards-compliant installation, it’s advisable to call in a professional.
